Answer:
an element is a pure substance which can not be spilt into simpler substances by chemical means
Explanation:
examples hydrogen, oxygen, copper
Genetic variation is advantageous because it enables some individuals and, therefore, a population, to survive despite a changing environment.
He chose to study birds, plants, and animals. Mostly 2 types of Finches.
The indigestible carbohydrates that
are found in plant cell walls are called dietary fibers. Dietary fibers are
group of complex carbohydrates that is found mostly in vegetables, fruits and
legumes. They include beans, whole grains such as wheat, nuts etc. Dietary
fibers cannot be digested in mammals because the body lacks digestive enzyme that
is required to break them down.
<span>Adaptation is a change or the process of change by which an organism or species becomes better suited to its environment.
Knowing the definition of each of the terms is the easiest way to get the answer. </span>
